lib/ntdll/rtl/thread.c

   1 /*
   2  * COPYRIGHT:         See COPYING in the top level directory
   3  * PROJECT:           ReactOS kernel
   4  * PURPOSE:           Rtl user thread functions
   5  * FILE:              lib/ntdll/rtl/thread.c
   6  * PROGRAMER:         Eric Kohl
   7  * REVISION HISTORY:
   8  *                    09/07/99: Created
   9  *                    09/10/99: Cleanup and full stack support.
  10  *                    25/04/03: Near rewrite. Made code more readable, replaced
  11  *                              INITIAL_TEB with USER_STACK, added support for
  12  *                              fixed-size stacks
  13  *                    28/04/03: Moved all code to a new statically linked
  14  *                              library (ROSRTL) so it can be shared with
  15  *                              kernel32.dll without exporting non-standard
  16  *                              functions from ntdll.dll
  17  */
  18
  19 /* INCLUDES *****************************************************************/
  20
  21 #include <ddk/ntddk.h>
  22 #include <napi/teb.h>
  23 #include <ntdll/rtl.h>
  24 #include <rosrtl/thread.h>
  25
  26 #define NDEBUG
  27 #include <ntdll/ntdll.h>
  28
  29 /* FUNCTIONS ***************************************************************/
  30
  31 NTSTATUS STDCALL RtlCreateUserThread
  32 (
  33  HANDLE ProcessHandle,
  34  PSECURITY_DESCRIPTOR SecurityDescriptor,
  35  BOOLEAN CreateSuspended,
  36  LONG StackZeroBits,
  37  PULONG StackReserve,
  38  PULONG StackCommit,
  39  PTHREAD_START_ROUTINE StartAddress,
  40  PVOID Parameter,
  41  PHANDLE ThreadHandle,
  42  PCLIENT_ID ClientId
  43 )
  44 {
  45  OBJECT_ATTRIBUTES oaThreadAttribs;
  46
  47  InitializeObjectAttributes
  48  (
  49   &oaThreadAttribs,
  50   NULL,
  51   0,
  52   NULL,
  53   SecurityDescriptor
  54  );
  55
  56  return RtlRosCreateUserThreadEx
  57  (
  58   ProcessHandle,
  59   &oaThreadAttribs,
  60   CreateSuspended,
  61   StackZeroBits,
  62   StackReserve,
  63   StackCommit,
  64   StartAddress,
  65   ThreadHandle,
  66   ClientId,
  67   1,
  68   (ULONG_PTR *)&Parameter
  69  );
  70 }
  71
  72 NTSTATUS STDCALL RtlInitializeContext
  73 (
  74  HANDLE ProcessHandle,
  75  PCONTEXT Context,
  76  PVOID Parameter,
  77  PTHREAD_START_ROUTINE StartAddress,
  78  PUSER_STACK UserStack
  79 )
  80 {
  81  return RtlRosInitializeContextEx
  82  (
  83   ProcessHandle,
  84   Context,
  85   StartAddress,
  86   UserStack,
  87   1,
  88   (ULONG_PTR *)&Parameter
  89  );
  90 }
  91
  92 NTSTATUS STDCALL RtlFreeUserThreadStack
  93 (
  94  HANDLE ProcessHandle,
  95  HANDLE ThreadHandle
  96 )
  97 {
  98  THREAD_BASIC_INFORMATION tbiInfo;
  99  NTSTATUS nErrCode;
 100  ULONG nDummy;
 101  ULONG nSize = 0;
 102  PVOID pStackBase;
 103  PTEB pTeb;
 104
 105  /* query basic information about the thread */
 106  nErrCode = NtQueryInformationThread
 107  (
 108   ThreadHandle,
 109   ThreadBasicInformation,
 110   &tbiInfo,
 111   sizeof(tbiInfo),
 112   NULL
 113  );
 114
 115  /* failure */
 116  if(!NT_SUCCESS(nErrCode)) return nErrCode;
 117  if(tbiInfo.TebBaseAddress == NULL) return STATUS_ACCESS_VIOLATION;
 118
 119  pTeb = (PTEB)tbiInfo.TebBaseAddress;
 120
 121  /* read the base address of the stack to be deallocated */
 122  nErrCode = NtReadVirtualMemory
 123  (
 124   ProcessHandle,
 125   &pTeb->DeallocationStack,
 126   &pStackBase,
 127   sizeof(pStackBase),
 128   &nDummy
 129  );
 130
 131  /* failure */
 132  if(!NT_SUCCESS(nErrCode)) return nErrCode;
 133  if(pStackBase == NULL) return STATUS_ACCESS_VIOLATION;
 134
 135  /* deallocate the stack */
 136  nErrCode = NtFreeVirtualMemory(ProcessHandle, pStackBase, &nSize, MEM_RELEASE);
 137
 138  return nErrCode;
 139 }
 140
 141 NTSTATUS STDCALL RtlExitUserThread(NTSTATUS nErrCode)
 142 {
 143  return NtTerminateThread(NtCurrentThread(), nErrCode);
 144 }
 145
 146 /* EOF */